CVE-2026-109485 json
Microsoft 365 Agents SDK Information Disclosure Vulnerability
published yesterday modified 17h ago also EUVD-2026-121584
- cvss
- 6.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 49%
- public exploits
- 0
- none known
Summary
Server-side request forgery (ssrf) in Microsoft 365 Agents SDK allows an authorized attacker to disclose information over a network.
Patch / fix
- Microsoft Microsoft Agent Framework SDK 1.8.77
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- yesterday
Exploit prediction
0.62% chance of exploitation in the next 30 days, higher than 49% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 6.3 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C |
| CNA | 3.1 | 6.3 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N |
Affected products
- Microsoft Microsoft Agent Framework SDK
Classification
- Weakness
-
- CWE-918 Server-Side Request Forgery
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2026-109485
vendor-advisory, patch
Sources
- CVE List CVE-2026-109485
- NVD CVE-2026-109485
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